I'm a fan of 4" barrels, but even I have found room for a couple of 3" ones.
Smith and Wesson 3rd Model Hand Ejector, I frame, in 32 Smith and Wesson Long. From about 1920. Barrel is actually 3 1/4" but close enough
At the other end of the spectrum, a brand new Taurus 327 T.O.R.O., in 327...